EET PMC-D726M - AO Output; Power and Energy; Basic Measurements; Energy Measurements

CET Electric Technology
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4.1.4 AO Output
The PMC-D726M comes optionally with an Analog Output which can be programmed as 0mA to 20mA
or 4mA to 20mA output. There are 4 setup parameters:
Parameter
Description
Type
Select between 0-20mA or 4-20mA output.
Key
Defines the parameter to which the Analog Output is proportional. The Analog
Output Parameters are listed in Table 3-7.
AO 1
Defines the full scale value of the parameter when the Analog Output is 20 mA.
The value ranges between -999,999 and +999,999.
AO 0
Defines the zero scale value of the parameter when the Analog Output is 0 mA or
4 mA. The value ranges between -999,999 to +999,999.
Table 4-1 AO Setup Parameters
For example, an AO of 4-20mA is required to be proportional to Phase A current. The maximum value
of phase A current is 2000A, and the minimum value is 500A. As such, the AO TYPE parameter should
be programmed as 4-20mA. The KEY should be programmed as Ia (Phase A current, Key Value = 1). The
AO 1 parameter should be programmed with the value 2000. The AO 0 parameter should be
programmed with the value 500. Therefore, when Phase A Current is 500A or below, the AO output is
4mA. When Phase A Current is 2000A, the AO output is 20mA. When Phase A Current is 1250A, the AO
output is (1250A-500A) x (20mA-4mA) / (2000A-500A) + 4mA = 12.00mA.
4.2 Power and Energy
4.2.1 Basic Measurements
The PMC-D726M provides the following basic measurements which can be retrieved via the Front Panel
or communications:
Parameter
Phase A
Phase B
Phase C
Total
Average
Uln
●
●
●
-
●
Ull
●
●
●
-
●
Current
●
●
●
-
●
Neutral Current
-
-
-
In (Calculated)
-
kW
●
●
●
●
-
kvar
●
●
●
●
-
kVA
●
●
●
●
-
Power Factor
●
●
●
-
●
Fundamental PF
●
●
●
-
-
Frequency
●
-
-
-
-
Table 4-2 Basic Measurements
4.2.2 Energy Measurements
Then PMC-D726M provides Energy measurements for active energy (kWh), reactive energy (kvarh) and
apparent energy (kVAh) with a resolution of 0.1k and a maximum value of 100,000,000.0. When the
maximum value is reached, the energy registers will automatically roll over to zero.
The energy parameters can be reset manually or preset to user-defined values through the Front Panel
or via communications. The PMC-D726M provides the following energy measurements:
Active Energy
kWh Import/Export
kWh Import/Export of TOU T1-4*
Reactive Energy
kvarh Import/Export
kvarh Import/Export of TOU T1-4*
Apparent Energy
kVAh
*
Available in Firmware V1.00.04 (LED) / V1.01.04 (LCD) or later
Table 4-3 Energy Measurement